Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Rocker Arms & Tappets
By OE Match
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Restore precise valve actuation and engine performance with our OE-match Rocker Arms. Not to be used with performance camshafts.
This kit is for one rocker arm, Contains:
1 x Rocker arm. 93010504305
1 x Rocker shaft. 90110534205
1 x Hexagon nut M8x1 99903400500
1 x Rocker arm shaft nut. 90110537603
1 x Rocker arm shaft bushing. 90110534403
1 x Rocker arm pan-head screw. PCG06700800
1 x Rocker arm screw. 90110537002
2 x Rocker arm shaft seal. 91109910352
Fits:
Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1987-1989 3.2L G50
Porsche 911 1975-1977 3.0L Turbo (930)
Porsche 911 1978-1989 3.3L Turbo (930)
Porsche 964 (911) C2 1989-93
Porsche 964 (911) C4 1989-93
Porsche 964 (911) RS 3.6L 1991-93
Porsche 964 (911) RS 3.8L 1991-93
Porsche 964 (911) TURBO 3.3L 1991-93
Porsche 964 (911) TURBO 3.6L 1991-93
Diagram Ref No 27, 28, 29, 30, 31, 32, 33
Why Replace This Part?
Worn or fatigued rocker arms can lead to improper valve lift or seating, reduced compression, misfires, elevated emissions, and may affect overall engine reliability. Upgrading to a high quality OE Match rocker arm restores the integrity of the cam-to-valve train and helps maintain optimal engine performance and longevity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
ROCKERARMKIT911.1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 912E 4CYL 1976
Note: Please do not exceed factory torque spec of 18Nm and use standard camshafts
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 914-6 1970 - 1976
This set includes:
12 x Rocker arm
12 x Rocker arm screw
12 x Hexagon nut
12 x Rocker shaft
24 x Rocker arm shaft seal
12 x Rocker arm shaft nut
12 x Rocker arm shaft bushing
12 x Pan-head screw
Diagram ref no. 22 to 27
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
ROCKERARMKIT911
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Rocker arm adjuster and securing nut set. Porsche 911 1965-89 / 964 / 914
Kit Includes
Adjuster Screw x 12
Adjuster Securing Nut x 12
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 914-6 1970-76
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110537002KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 914-6 1970-76
Diagram Ref No 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG06700800
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Worn rocker arms retard cam timing and rob the engine of power. These are the latest heavy duty, 930 rockers for optimum reliability.
To be used with standard camshafts.
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 914-6
Why Replace This Part?
Worn or fatigued rocker arms can lead to improper valve lift or seating, reduced compression, misfires, elevated emissions, and may affect overall engine reliability. Upgrading to a high-quality OE-match rocker arm restores the integrity of the cam-to-valve train and helps maintain optimal engine performance and longevity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010504305
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
This OE Match set of 12 rocker arm bushes is ideal for a complete valvetrain refresh during a top-end rebuild.
Fits:
Porsche 911/912 1965 - 1989
Porsche 964 1989 - 1994
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110534403
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93

Fits:
Porsche 911/912 - 1965 to 1989
Porsche 964 - 1989 to 1994
Click 'Zoom in' for large parts diagram.
Diagram ref no 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110537603
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
This locking nut is critical in maintaining the correct clearance setting between the rocker-arm or cam follower and valve stem, ensuring reliable valvetrain performance and correct engine behavior.
SET OF 12
Fits:
Porsche 911 1973 - 1989
Porsche 911 Turbo 1975 - 1989
Porsche 964 C2 / C4 / RS 1989 - 1994
Porsche 964 Turbo 1991 - 1994
Porsche 914 1970 - 1976
Porsche 914/6 1970 - 1972
Diagram ref no 50
• Position on Vehicle: Engine cylinder head, at the valve adjusting screw area - used to lock the adjuster once clearance is set.
• Function: Locks the valve-adjusting screw in place, ensures the correct clearance remains unchanged under engine operation, prevents loosening of adjuster and ensures valvetrain reliability.
• Specification: M8 × 1 thread, correct height and socket size, treated or coated for durability - direct-fit replacement of Porsche part number 99903400500.
• Applications: Ideal when your original nut is damaged, the adjuster is loose, you are doing a valve-clearance service, or you require reliable hardware for engine rebuilds.
While small, this locking nut performs a vital role: without it, the adjuster can drift, valve clearance can open up or close down, leading to noisy operation, performance loss, premature wear or even engine damage. Symptoms of a failing/incorrect nut include adjusting screw backing out, noisy valvetrain, incorrect clearance and poor idle or performance.
When to replace:
• The adjuster locking nut is missing, corroded, rounded or damaged.
• After valve-clearance adjustment and you want guaranteed lock-in of the setting.
• During engine rebuild or cylinder-head service when valvetrain hardware is exposed.
• To replace the original with fresh hardware to maintain service integrity and reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99903400500
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Restore dependable valve-train operation and provide the correct working interface for a compatible camshaft with this OE Match Set of Web Cam Lifters, reference WC-NL-174. Designed for use in compatible engine builds, these lifters—also known as cam followers or tappets—transfer the movement of the camshaft through the valve train, allowing the intake and exhaust valves to open and close correctly.
Fits:
Porsche 356 / 912
Lifters operate directly against the camshaft lobes and are subjected to continuous mechanical loading, friction, and high engine temperatures. Their condition and compatibility with the camshaft are therefore critical to valve-train reliability. A correctly matched lifter maintains consistent contact with the cam lobe, helping preserve the intended camshaft profile and accurate valve operation.
What This Product Does:
- Follows the profile of the rotating camshaft lobes.
- Transfers camshaft movement through the valve train.
- Helps control the opening and closing of the intake and exhaust valves.
- Supports correct valve lift and timing.
- Provides a critical contact surface between the camshaft and valve train.
- Helps maintain consistent valve-train operation.
- Supports smooth and dependable engine performance.
- Replaces worn, pitted, scored, or damaged lifters.
- Provides a suitable solution for compatible engine rebuilds and camshaft installations.
Symptoms Of Wear Or Failure:
- Ticking, tapping, or clicking from the valve train.
- Increasing valve-train noise with engine speed.
- Difficulty maintaining correct valve clearances.
- Repeated changes in valve adjustment.
- Reduced engine power or performance.
- Rough or inconsistent engine operation.
- Reduced valve lift due to component wear.
- Pitting or scoring on the lifter faces.
- Concave or uneven wear on the lifter contact surfaces.
- Visible wear or damage to corresponding camshaft lobes.
- Metallic particles in the engine oil.
- Abnormal lifter wear discovered during engine disassembly.
Why Replacement Matters:
- Lifters are critical to both valve operation and camshaft durability. The camshaft and lifter contact surfaces operate together under substantial mechanical pressure, and excessive wear to either component can alter the intended valve lift and timing.
- A worn, pitted, or incorrectly matched lifter may damage the corresponding camshaft lobe. As the surfaces deteriorate, metal particles can enter the engine oil and circulate through the lubrication system, potentially contributing to further internal engine wear.
- A badly worn lifter or cam lobe can also reduce valve lift, affecting cylinder filling and exhaust gas flow. This may result in reduced performance, rough running, and inefficient combustion.
- Correct installation is particularly important when fitting replacement lifters. The condition of the camshaft must be inspected carefully, and the lifters must be compatible with the specific camshaft being used. Installing new lifters against an unsuitable or severely worn camshaft may result in rapid wear and premature failure.
- Replacing worn or unsuitable components with the correct OE Match Web Cam Lifters WC-NL-174 helps restore consistent valve-train movement, correct camshaft operation, and dependable engine performance when correctly matched and installed.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Restore reliable valve-train operation and consistent camshaft performance with this OE Match HP Lifter Set, reference GDP356/912LIFTER. Supplied as a set of 8 lifters, these components are designed for compatible engine applications and are intended to work with all stock-profile camshafts, making them suitable for standard-specification engine rebuilds, restorations, and maintenance.
Fits:
Porsche 356 / 912
Lifters, also known as cam followers or tappets, form a critical interface between the camshaft and the engine's valve train. As the camshaft rotates, each cam lobe acts on a lifter, transferring movement through the associated valve-train components to open and close the intake and exhaust valves at the correct points in the engine cycle.
What This Product Does:
- Includes 8 lifters for a complete compatible engine application.
- Works with compatible stock-profile camshafts.
- Follows the rotating camshaft lobes.
- Transfers camshaft movement through the valve train.
- Helps control correct intake and exhaust valve operation.
- Supports accurate valve timing and valve lift.
- Provides a consistent contact surface between the camshaft and valve train.
- Helps maintain smooth and dependable engine operation.
- Replaces worn, pitted, scored, or damaged lifters.
- Provides an OE Match solution for compatible engine rebuilds and restorations.
Symptoms Of Wear Or Failure:
- Ticking, tapping, or clicking noises from the valve train.
- Increased mechanical noise as engine speed rises.
- Difficulty maintaining correct valve clearances.
- Reduced engine performance.
- Rough or inconsistent engine operation.
- Reduced valve lift caused by component wear.
- Pitting or scoring on the lifter contact surfaces.
- Concave or unevenly worn lifter faces.
- Visible camshaft lobe wear.
- Metallic particles in the engine oil.
- Abnormal wear discovered during valve-train inspection.
- Damaged or excessively worn lifters found during an engine rebuild.
Why Replacement Matters:
- Lifters operate directly against the camshaft and are critical to correct valve-train operation. A worn lifter surface can prevent the component from following the camshaft profile correctly, potentially affecting valve lift, valve timing, combustion efficiency, and overall engine performance.
- Lifter and camshaft wear are also closely related. A damaged or incorrectly matched lifter can accelerate wear of the corresponding camshaft lobe. Once this wear begins, metallic debris may circulate through the engine oil and contribute to damage elsewhere within the engine.
- Replacing worn lifters is particularly important during an engine rebuild or when installing an appropriate camshaft. Correct compatibility between the camshaft profile and lifters helps establish the correct contact pattern and promotes reliable long-term operation.
- Replacing worn or damaged components with this OE Match HP Lifter Set GDP356/912LIFTER – 8 Pieces helps restore consistent valve-train movement, correct camshaft operation, and dependable engine performance when installed with a compatible stock-profile camshaft.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Width: 26mm
Shaft dia: 18mm
Housing dia: 20mm
Bronze coated steel back
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-97
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110534101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Sold each.
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 914-6 1970-76
Diagram Ref No 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG06700800
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold each - 8 required per car

Fits:
Porsche 356 - 1950 to 1955
Porsche 356A - 1956 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C / SC - 1963 to 1965
Porsche 912 - 1966 to 1969
This rocker arm adjusting screw is suitable for use in vehicles that are equipped with cast iron or aluminum alloy rocker arm supports.
Please Note
This rocker arm adjusting screw is not used on the Carrera versions of the Porsche 356
Click 'Zoom in' for large parts diagram.
Diagram ref no 21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
36905243
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 914 (1970-1976)
Rocker Arm Adjustment Screw
Sold each
The Porsche Rocker Arm Adjustment Screw is a
vital valve train component used on Porsche 911 and Porsche 964 models from
1965 to 1994. This precision-engineered adjuster screw allows accurate setting
of valve clearances, ensuring the correct relationship between the rocker arm
and valve stem for smooth engine operation and optimal performance.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Diagram ref no 32
In Porsche's iconic air-cooled flat-six engines, valve clearance adjustment is a critical maintenance procedure. The rocker arm adjustment screw enables technicians to set valve lash precisely, helping maintain correct valve timing, efficient combustion, reduced valve train wear, and long-term engine reliability.
Whether you are carrying out a routine valve adjustment, rebuilding a cylinder head, or restoring a classic Porsche engine, replacing worn adjustment screws helps ensure accurate valve settings and dependable valve train operation.
What Does the Rocker Arm Adjustment Screw Do?
The rocker arm adjustment screw is used to establish and maintain the correct valve clearance between the rocker arm and the valve stem.
Its primary functions include:
- Allowing precise valve clearance adjustment
- Maintaining correct valve lash specifications
- Supporting accurate valve timing
- Reducing excessive valve train wear
- Ensuring smooth engine operation
- Helping maximise engine performance and efficiency
Correct valve clearance is essential on air-cooled Porsche engines, as thermal expansion during operation can significantly affect valve train geometry.
Why Does the Rocker Arm Adjustment Screw Fail?
Over time, the adjustment screw is subjected to constant mechanical loading, heat cycles, vibration, and repeated adjustment procedures.
Common causes of failure include:
- Wear on the adjustment tip
- Surface pitting or scoring
- Metal fatigue Excessive valve train loads
- Poor lubrication conditions
- Incorrect valve adjustment procedures
- Corrosion during long-term storage
- Damage caused during engine rebuilds or maintenance
As wear develops on the adjustment surface, maintaining accurate valve clearances becomes increasingly difficult.
Common Symptoms of a Worn Adjustment Screw
A worn or damaged rocker arm adjustment screw may cause:
- Excessive valve train noise
- Difficulty achieving correct valve clearance
- Frequent valve adjustment requirements
- Inconsistent valve lash measurements
- Reduced engine performance
- Increased wear on valve stems
- Rough running or poor idle quality
- Premature wear of related rocker arm components
In severe cases, excessive wear can affect valve timing accuracy and contribute to accelerated engine wear.
When Should You Replace It?
Replacement is recommended whenever wear is identified during inspection or engine servicing.
The adjustment screw should be replaced:
- During valve adjustment procedures if wear is found
- During cylinder head rebuilds
- During complete engine rebuilds
- When valve train components are being renewed
- If the adjustment tip is pitted or damaged
- When accurate valve clearance cannot be maintained
- During preventative restoration work
- On high-mileage engines showing valve train wear
Many Porsche engine specialists replace adjustment screws during major engine work to ensure consistent valve train geometry and long-term reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110537002
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
This rocker arm bush is an replacement bushing that supports the rocker arm/rocker shaft interface in the cylinder head. Manufactured to OE-style dimensions, it restores correct rocker shaft support, helps reduce valvetrain noise, and promotes smooth, consistent valve operation - ideal for top-end servicing or engine rebuilds.
Sold each, 12 required per vehicle.
Fits:
Porsche 911/912 1965 - 1989
Porsche 964 1989 - 1994
Diagram ref no 26
Worn or loose rocker arm bushings allow excessive shaft play, leading to noisy valve trains, inaccurate lift, premature shaft wear, and eventual valve timing issues. Replacing them with OE Match bushings during engine overhaul or top-end servicing restores proper geometry and prolongs the life of the valvetrain.
When to replace:
• Crankshaft or valve train noise
• Excessive lateral shaft movement
• High-mile engine rebuild
• During rocker shaft removal/service
• Preventive maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110534403
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93

Fits:
Porsche 911/912 - 1965 to 1989
Porsche 964 - 1989 to 1994
Click 'Zoom in' for large parts diagram.
Diagram ref no 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110537603
The product you are viewing cross references to these numbers
OEMatch Rocker Arms & Tappets — Fit, Function, Confidence
OEMatch offers replacements for rocker arms and tappets used across Porsche models. These valvetrain parts transfer camshaft motion to the valves, controlling lift and timing for intake and exhaust events. Correct component condition reduces noise, protects the camshaft and supports consistent engine response in everyday and spirited use.
Available Types
- Hydraulic tappets
- Solid lifters (mechanical tappets)
- Roller cam followers
Understanding OEMatch Rocker Arms & Tappets
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original rocker arms & tappets.
OE (Original Equipment) refers to parts matching original specifications for the rocker arms & tappets and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM rocker arms & tappets engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Rocker arms and tappets convert the camshaft’s rotation into the vertical movement that opens and closes intake and exhaust valves. Proper lubrication, correct clearances and accurate geometry are essential for reliable valve timing and to limit friction and wear. OEMatch provides a wide range of Porsche engine components and catalogs over 4,000 part numbers with more than 8,700 cross-references, with ongoing product development for model-specific applications.
Benefits Include
- Restores accurate valve timing and consistent breathing
- Reduces valvetrain noise and mechanical wear
- Helps prevent camshaft and valve damage
Why Rocker Arms & Tappets Wear and Fail
- Oil starvation or blocked oil passages reducing lubrication
- Surface wear, pitting or contamination from debris
- Excessive valve clearance or incorrect adjustment causing impact damage
- Camshaft wear or material fatigue from prolonged high‑stress use
The Importance of Replacing with OEMatch Rocker Arms & Tappets
Replacing worn rocker arms and tappets preserves valve timing, minimises friction losses and reduces the chance of costly camshaft or valve damage. For Porsche engines, maintaining correct valvetrain condition supports drivability, idle stability and emissions control; using well‑specified replacements reduces the risk of secondary engine faults and helps maintain long‑term reliability.
Advantages
- Protects the engine through correct geometry and material choice
- Improves NVH by reducing valvetrain noise
- Suitable for restorations, rebuilds and regular maintenance